MTM903

Limiti d'impiego

Product description

The MTM903 propeller shaft seal is engineered to dominate the market for medium to large boats, offering unparalleled value on investment in its category. With its innovative design, MTM903 stands as the world’s most compact split shaft seal featuring an integrated safety barrier, setting new standards for efficiency and reliability.

Among many key features there is the stationary flange: it is constructed from premium 316 stainless steel, comes standard and can accommodate up to 6 radial holes (optional) for additional functionalities such as flushing, temperature sensing, vibration monitoring (triaxial), pressure sensing, or vent line integration. Flange specifications including size, number, center distance, and set screw size are customizable to meet specific requirements. The stationary ring of MTM903 is available in Silicon Carbide (S1) or Tungsten Carbide (T1), inserted in a 316 stainless steel case, ensuring durability and reliability in diverse operating conditions.

The rotating ring is connected to the propulsion shaft with a clamp that drive radially the rotating case provided in 316 stainless steel with insert in Graphite Resin (G2), Graphite Antimony (G3), Silicon Carbide (S1) or Tungsten Carbide (T1). Antother key feature of Microtem MTM903 propeller shaft seal is that it uses SpliTEM® technology, the sliding rings (stationary and rotating) are made in two halves, facilitating maintenance directly in the water and/or with the propeller shaft in position, resulting in significant cost savings. The pneumatic barrier ring Watershield®, integrated into the stationary flange, makes the MTM903 the most technologically advanced product in the propeller shaft seals market. Featuring an integrated preload system, the MTM903 ensures straightforward installation without the need for specialized expertise, further enhancing user convenience and efficiency.

From maintenance savings to advanced safety features, the MTM903 propeller shaft seal offers unmatched performance and reliability, making it the top choice for marine professionals and shipyards worldwide.

Operative limits

d = from 70 mm (2,7″) up to 300 mm (11,8″) *
p1 = 2 bar (29 psi)
T = from -30°C(-22°F) up to +150°C (302°F)
vg = 10 m/s (32 m/s)
Axial Movement : up to -6/+12 mm
Radial movement : up to +/- 5 mm
Angular movement : up to 2°
* Available in inches too

Standard face materials

Rotary face:
Resin/antimony carbon (G2/G3)
Silicon carbide (S1)

Stationary face:
Silicon carbide (S1)

Elastomers

NBR / Nitrile (N)
EPDM / Ethilene propylene (E)

Applications

Yachts
Medium/Large Boats
Work boats
Patrol boats
Tugs
Passenger transport
Water-lubricated lines
Oil lubricated lines
Water jets

MTM903

Part list

1. Rotary clamp
2. O-ring
3. Holder rotary insert
4. Pin
5. Rotary seal face
6. Stationary seal face
7. Holder stationary insert
8. O-ring
9. Stationary flange
10. Valve
11. Inflatable elastomer
12. O-ring
13. Clamp Screw
14. Screw
15. Rotary lock ring
16. Spring
17. O-ring
18. Stationary lock ring
19. Screw

Product description

The MTM903 propeller shaft seal is engineered to dominate the market for medium to large boats, offering unparalleled value on investment in its category. With its innovative design, MTM903 stands as the world’s most compact split shaft seal featuring an integrated safety barrier, setting new standards for efficiency and reliability.

Among many key features there is the stationary flange: it is constructed from premium 316 stainless steel, comes standard and can accommodate up to 6 radial holes (optional) for additional functionalities such as flushing, temperature sensing, vibration monitoring (triaxial), pressure sensing, or vent line integration. Flange specifications including size, number, center distance, and set screw size are customizable to meet specific requirements. The stationary ring of MTM903 is available in Silicon Carbide (S1) or Tungsten Carbide (T1), inserted in a 316 stainless steel case, ensuring durability and reliability in diverse operating conditions.

The rotating ring is connected to the propulsion shaft with a clamp that drive radially the rotating case provided in 316 stainless steel with insert in Graphite Resin (G2), Graphite Antimony (G3), Silicon Carbide (S1) or Tungsten Carbide (T1). Antother key feature of Microtem MTM903 propeller shaft seal is that it uses SpliTEM® technology, the sliding rings (stationary and rotating) are made in two halves, facilitating maintenance directly in the water and/or with the propeller shaft in position, resulting in significant cost savings. The pneumatic barrier ring Watershield®, integrated into the stationary flange, makes the MTM903 the most technologically advanced product in the propeller shaft seals market. Featuring an integrated preload system, the MTM903 ensures straightforward installation without the need for specialized expertise, further enhancing user convenience and efficiency.

From maintenance savings to advanced safety features, the MTM903 propeller shaft seal offers unmatched performance and reliability, making it the top choice for marine professionals and shipyards worldwide.

Part list

1. Rotary clamp
2. O-ring
3. Holder rotary insert
4. Pin
5. Rotary seal face
6. Stationary seal face
7. Holder stationary insert
8. O-ring
9. Stationary flange
10. Valve
11. Inflatable elastomer
12. O-ring
13. Clamp Screw
14. Screw
15. Rotary lock ring
16. Spring
17. O-ring
18. Stationary lock ring
19. Screw

Standard face materials

Rotary face:
Resin/antimony carbon (G2/G3)
Silicon carbide (S1)

Stationary face:
Silicon carbide (S1)

Elastomers

NBR / Nitrile (N)
EPDM / Ethilene propylene (E)

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